Fuel-saving device.



E. SCHAEFER.

FUEL SAVING DEVICE. APPLICATION FILED SEPLSO. 1912.

1,141,657. Patented June 1, 1915.

2 SHEETS-SHEET l- E/wsf 50/2 aefe/ E. SCHAEFEB.

FUEL SAVING DEVICE.

APPLICATION FILED sumac. 1912.

1 1 4 1 ,657 Patented June 1, 1915.

2 SHEETSSHEET 2.

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THE NORRIS PETERS 50.. PHOTO-LITHQ. WASHINGTON, D. C.

'ETNTTED TATE PATENT @FFTQE.

ERNST SCHAEFEB, OF SGRANTON, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO GEORGE E. PETTEY, OF MEMPHIS, TENNESSEE.

FUEL-SAVING DEVICE.

Specification of Letters Patent.

Patented June 1, 1915.

Application filed September 30, 1912. Seiia1No. 723,109.

State of Pennsylvania, have invented certainnew and useful Improvements in Fuel- Saving Devices, of which the following is a specification. 4 g

My invention relates to improvements in fuel saving devices, and refers particularly to an attachment for use upon heating stoves or furnaces, hot air furnaces, hot water or steam heaters, high pressure boilers, and other heating apparatus to produce an ef- 5 fective and even combustion of the gases and thus secure an economy in the amount of fuel used.

The primary object of the inventionis to provide means forinducing a continuous flow of air to a fore-heating chamber, separate and thoroughly heat the air in transit, and to discharge the same into a chamber, from whence it is carried to the fire to form a complete combustion, thereby serving as a smoke consumer, as well as effecting a material saving in fuel.

Another object of the invention is to pro vide a fuel saving device which can be applied to any stove or furnace in use; which will be of the simplest and cheapest con struction; which will evenly distribute the oxygen over the fuel; and which will, in general, prove highly desirable and eflicient from every stand-point.

To attain the desired objects, the invention consists of certain novel features of construction and combinations of parts, substantially as disclosed herein.

in the drawings :-Figure 1 is a plan view of a fuel saving device constructed in accordance with and embodying the principles of the invention, part of the upper wall,

being broken away to disclose details of construction. Fig. 2 is an edge view thereof.

Fig. 4 is a detail view of the accommodation pipe used in connection with the deequipped with my invention, said view illustrating a slight modification of the invention. Fig. 8 is a section through *the lid Fig. Sis a sectionalview of said device.

shown in Fig. 7, and Fig. 9 is a plan view of a stove equipped with a stove lid embodying my improvement to illustrate its position with reference to the stove holes and fire box.

In the drawings :The letter A designates the upper wall and B the bottom wall of the device, which walls are bolted together by bolts C. One end wall is formed with a nipple D into which is screwed the accommodation pipe E, best shown in Fig. 4, and having holes E. An air inlet pipe F is screwed into the nipple G extending from one side wall, as seen clearly in Figs. 1, 2 and 6.

The top and bottom members H are provided with exterior spaced ribs J. The bottom part is also provided with air separators K, there being a fore-heating chamber L, a super-heating chamber M and a chamber N formed with the holes N, see Fig. 3. The top part of the device is similar to the bottom part.

It will be seen that the top and bottom parts are secured together and that the fore heating chamber serves to receive the cold air from the pipe F, air separators being located in the super-heating chamber for dividing the in-fed air into thin wide fiat form. The chamber N is located adjacent the fire box 0 of the stove O and discharges the air over the fire through the holes N.

In use, air is fed into the fore-heating chamber through the air inlet pipe F, air passing through said chamber into the super-heating chamber M and thence into the chamber N, then through the holes N to the fire. As stated, the chamber N is located in close proximity to the fire, and the air delivered thereinto is rarefied by reason of the heat radiated from the walls of said chamber N. The pipe E brings the rarefied air in front of the fire and the heated air is mixed with the fuel and gases, insuring a complete combustion, thus producing an economy in fuel, as well as reducing the smoke resulting'from such combustion to a minimum.

Figs. 7, 8 and 9 illustrate a modified construction, in which a stove lid P, having an air inlet P and knobs P arranged around the inlet opening, to prevent it from respectively of the device, said lidand top part Q is constructed with a bafile similar to that of the top part, a series of ribs U, a chamber T a series of holes V arranged adjacent the fire box V of the stove V and a nipple S for connection with the pipe R. I V

In use, the cold air taken through the inlet opening, travels through the fore-heating chamber, into the super-heating chamber, and thence into the chamber T then throughthe holes V Where it comes out in burning condition and is commingled ith thefuel and burns the gas. The pipe R brings-the air in the front of the fire pot, and the burning air strikes directly over the fire and is mixed With the fuel, and burns the escaping gases, thereby saving fuel and reducing the smoke ordinarily experienced, to a minimum.

Gdpies of this patent may' be obtained for From the foregoing description, jtakenin connection With the accompanying drawings, the construction andoperationrof my improvements will be readily seen and understood, and it Will be apparent to all that the device will fit any furnace, stove,

or water heater, that it can be constructed at a low cost, Will efie'ctively consume the smoke, and will Work a material saving in fuel by reason of lts'thorough mixing of the air and fuel, and that generallyspeaking, the improvements illprove practical,

In testimony whereof I aflix my signature in presence of'tWo Witnesses. I

' ERNST SCHAEFER.

, Witnesses:

HENRY BURKARD, ALBERT TWINING.

five cents each, by addressing the Commissioner of Patents.

'Wash1ngton',D.0." r 

